Many studies have been performed to describe quantum dots using a parabolic confining potential. However, infinite potentials are unphysical and lead to problems when describing laterally coupled quantum dots. We propose the use of the parabolic potential of a homogeneous density distribution within a 2D jellium, with the Coulombic potential outside that jellium. The electronic structure for such quantum dots is calculated using a wavelet-based electronic structure code, developed for this purpose. The potential is compared with its limits for infinitely small and infinitely large radii of the jellium, i.e. a 2D atom and a pure parabolic potential respectively. Finally, two such laterally coupled quantum dots are studied.
|Original language||English (US)|
|Number of pages||8|
|Journal||Journal of Physics Condensed Matter|
|State||Published - Oct 22 2003|
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics